Bella Fernandez Barroso
Last Name
Fernandez Barroso
First name
Bella
Email
bella.fernandez@unisg.ch
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Item type:Publication, Towards Privacy-Compliant Healthcare Data: Developing an Efficient Multilingual Filter for PII and PHI under Safe Harbor Principles(SCITEPRESS - Science and Technology Publications, 2026-10-28); Medical text anonymization is essential for data-driven healthcare but constrained by strict privacy regulations, particularly in multilingual Swiss settings. A lightweight, privacy-compliant filter for removing personally identifiable and protected health information from unstructured medical text is presented. The system combines regular expressions, rule-based logic, and locally-run guided LLMs, where local open-source models are constrained to assign a label to each word. This approach is evaluated on 50 manually annotated SwissGerman medical documents and 520 English i2b2 notes. A regex-only baseline shows substantially lower F1 score and higher leakage on both datasets. Overall, the proposed hybrid approach reduces residual identifiers while maintaining deterministic runtime and modest computational cost, enabling practical medical text anonymization in multilingual contexts.Type:conference paperJournal:Proceedings of the 18th International Joint Conference on Knowledge Discovery, Knowledge Engineering and Knowledge ManagementVolume:2